mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 02:15:23 +07:00
3ba09df4b8
Asymmetric CPU capacity can not necessarily be determined accurately at the time the initial sched_domain hierarchy is built during boot. It is therefore necessary to be able to force a full rebuild of the hierarchy later triggered by the arch_topology driver. A full rebuild requires the arch-code to implement arch_update_cpu_topology() which isn't yet implemented for arm64. This patch points the arm64 implementation to arch_topology driver to ensure that full hierarchy rebuild happens when needed. Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: dietmar.eggemann@arm.com Cc: valentin.schneider@arm.com Cc: vincent.guittot@linaro.org Link: http://lkml.kernel.org/r/1532093554-30504-4-git-send-email-morten.rasmussen@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_TOPOLOGY_H
|
|
#define __ASM_TOPOLOGY_H
|
|
|
|
#include <linux/cpumask.h>
|
|
|
|
struct cpu_topology {
|
|
int thread_id;
|
|
int core_id;
|
|
int package_id;
|
|
int llc_id;
|
|
cpumask_t thread_sibling;
|
|
cpumask_t core_sibling;
|
|
cpumask_t llc_sibling;
|
|
};
|
|
|
|
extern struct cpu_topology cpu_topology[NR_CPUS];
|
|
|
|
#define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id)
|
|
#define topology_core_id(cpu) (cpu_topology[cpu].core_id)
|
|
#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)
|
|
#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)
|
|
#define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling)
|
|
|
|
void init_cpu_topology(void);
|
|
void store_cpu_topology(unsigned int cpuid);
|
|
void remove_cpu_topology(unsigned int cpuid);
|
|
const struct cpumask *cpu_coregroup_mask(int cpu);
|
|
|
|
#ifdef CONFIG_NUMA
|
|
|
|
struct pci_bus;
|
|
int pcibus_to_node(struct pci_bus *bus);
|
|
#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
|
|
cpu_all_mask : \
|
|
cpumask_of_node(pcibus_to_node(bus)))
|
|
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
#include <linux/arch_topology.h>
|
|
|
|
/* Replace task scheduler's default frequency-invariant accounting */
|
|
#define arch_scale_freq_capacity topology_get_freq_scale
|
|
|
|
/* Replace task scheduler's default cpu-invariant accounting */
|
|
#define arch_scale_cpu_capacity topology_get_cpu_scale
|
|
|
|
/* Enable topology flag updates */
|
|
#define arch_update_cpu_topology topology_update_cpu_topology
|
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
#endif /* _ASM_ARM_TOPOLOGY_H */
|